T530 lcd image distortions - possibly from hinge?

Hi everybody,
I am first time poster. I own a T530 and so far I am very satisfied with it - the best laptop I've had, better even then my previous Elitebook and Macbook pro.
I am posting, because the LCD screen started to show image distortions when changing the angle of the screen. I searched for a similar problem on the forums, but did not find any (maybe because of bad keywords). Anyway, I am hoping that you will be able to help diagnose the problem:
Image distortions occur when changing the angle of the screen (usually when opening), always on the same angle - this is why I suspect a problem with the hinges. Also, this happens only when opening, not when closing, so this is a one-way problem. See attached pictures and video for a better explanation and demonstration.
Here is a link to a short video (20s) where the fault is clearly seen: T530 video of lcd fault
At first this was only rarely and could not be repeated. But now it is worse and can be easily repeated. I suspect it has something to do with the hinges, but not sure. The laptop was never dropped and was always handled with care.
Any idea what is causing the distortions and how to fix it?
Best regards,
VO

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